<p>An 18-year-old was arrested on a charge of second-degree cruelty to juveniles after his baby was hospitalized with brain damage, police said.</p><p>Gregory Parker of Morgan City was arrested Monday after a doctor Children's Hospital of New Orleans called police about a 3-month-old with shaken baby syndrome.</p><p>Detectives determined the baby was in his father's care when he suffered the injuries. Parker was booked into the St. Mary Parish jail. </p><p>No bond had been listed as of this morning.</p>